condition mean min max ZT0-3 0.32347251075000005 0.209193381 0.43775164050000004 ZT4-7 0.98979147375 0.743662527 1.2359204204999998 ZT8-11 2.5376393505 1.963884766 3.111393935 ZT12-15 5.1188285135000005 3.7944998455 6.4431571815 ZT16-19 2.14952228575 1.9697044335 2.329340138 ZT20-23 3.69518230775 3.045766155 4.3445984605